First of all, What is a Capacitor Discharge Ignition?
What is the difference between an ordinary CDI with Racing CDI?.
IMO (I'm only guessing), The RCDI doesn't give more voltage to the SP than ordinary CDI. The only difference I think is the Rev limiter are higher and true RCDI are programmable.
Or maybe in some extreme condition, like in higher RPM, the voltage may be even lesser, because the SP has to fire more at a given RPM, say 11K RPM. The Capacitor (as in "C") is to store voltage just like a water tank. The more faucet it uses (RPM), the lesser the water flow. Hula lang po ito..http://www.gill.co.uk/products/digital_ignition/Introduction/3_CDI_ignition.asp
Another question to consider here is, does the SP really needs a Mega volts in everyday driving? I say NO.
Another question; If you're engine is only designed to go 9K RPM, will switching to RCDI with no Rev Limiter make it go faster. I say no again. If you're engine is only design for 9K RPM, switching to RCDI is useless. Your engine will experience valve float and you have to switch to racing valve spring.
Another question to consider; As you go to higher RPM, engine vibration will also go higher in frequency and amplitude. Do you think your crankshaft can handle this? I say NO again. Then you have to dynamic balance the engine.
Another question to consider; etc, etc, etc, and the list goes on.
Final question; Is it worth it?